Alert archive / Illinois / Flash Flood Watches in 2015
Flash Flood Watch 10, NWS Lincoln, IL
NWS Lincoln, IL issued this flash flood watch at Jul 12, 2015, 3:27 PM CDT for 19 counties in Illinois. It took effect at Jul 13, 2015, 4:00 AM CDT. It was in force for 18 hr.
The area
The counties it named.
The facts
- Issued
- Jul 12, 2015, 3:27 PM CDT (20:27 UTC)
- In effect from
- Jul 13, 2015, 4:00 AM CDT
- Expired
- Jul 13, 2015, 9:57 PM CDT
- In force
- 18 hr
- Issued by
- NWS Lincoln, IL
- Flood severity
- None
Counties Champaign County, IL, Clark County, IL, Clay County, IL, Coles County, IL, Crawford County, IL, Cumberland County, IL, DeWitt County, IL, Douglas County, IL, Edgar County, IL, Effingham County, IL, Jasper County, IL, Lawrence County, IL, Macon County, IL, McLean County, IL, Moultrie County, IL, Piatt County, IL, Richland County, IL, Shelby County, IL, Vermilion County, IL
The radar
The Lincoln radar (KILX), 114 km from the middle of the area, began a volume at 20:27 UTC, the scan nearest the moment this went out.
Open the radar archive at this moment
The archived warnings, watches and discussions in force at that minute are drawn over the scan, this one among them.
The nearest sounding before it
Lincoln, IL (KILX), launched 12:00Z, 8.5 hours before the alert went out and 75 km from the middle of its area. This is the routine balloon launch nearest before it, the air the forecaster had in hand, not a measurement taken for the alert.
- Mixed-layer CAPE
- 606 J/kg
- Mixed-layer CIN
- -145 J/kg
- Mixed-layer LCL
- 877 m above ground
- 0-6 km bulk shear
- 17 kt
- 0-1 km storm-relative helicity
- 79 m²/s²
- 0-3 km storm-relative helicity
- 65 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
What forecasters said that day
The local office's own words before this flash flood watch went out, as it sent them, from the Iowa Environmental Mesonet's archive of National Weather Service text.
NWS Lincoln, IL wrote its last area forecast discussion before this flash flood watch went out at Jul 12, 2:52 PM CDT, 35 minutes earlier.
Area forecast discussion, Jul 12, 2:52 PM CDT, 35 minutes before
<!doctype html>
<html lang="en">
<head>
<meta charset="utf-8">
<meta name="viewport" content="width=device-width, initial-scale=1">
<title>Service Notice</title>
<link rel="stylesheet" href="index.css">
</head>
<body>
<main class="wrap">
<section class="card" role="status" aria-live="polite">
<div class="status" id="status">Temporary Notice</div>
<h1 id="headline">This service is currently unavailable.</h1>
<p id="message1">
The site you requested is temporarily down for maintenance or an unexpected outage.
</p>
<p id="message2">
Please try again in a few minutes.
</p>
<p class="small" id="detail">
If you are an administrator, restore upstream service and remove the redirect/fallback rule when normal operations resume.
</p>
</section>
</main>
<script src="index.js"></script>
</body>
</html>Hazardous weather outlook, Jul 12, 3:15 PM CDT, 12 minutes before
HAZARDOUS WEATHER OUTLOOK NATIONAL WEATHER SERVICE LINCOLN IL 315 PM CDT SUN JUL 12 2015 ILZ027>031-036-037-040>042-047>052-131100- CASS-CHRISTIAN-FULTON-KNOX-LOGAN-MARSHALL-MASON-MENARD-MORGAN- PEORIA-SANGAMON-SCHUYLER-SCOTT-STARK-TAZEWELL-WOODFORD- 315 PM CDT SUN JUL 12 2015 ...HEAT ADVISORY IN EFFECT FROM NOON TO 8 PM CDT MONDAY... THIS HAZARDOUS WEATHER OUTLOOK IS FOR CENTRAL ILLINOIS. .DAY ONE...TONIGHT STRONG TO SEVERE THUNDERSTORMS WILL MOVE INTO THE AREA AFTER MIDNIGHT...AS A LARGE AREA OF THUNDERSTORMS MOVES SOUTHEAST FROM THE UPPER MISSISSIPPI VALLEY. DAMAGING WINDS ARE THE GREATEST CONCERN WITH THESE STORMS...ALTHOUGH ISOLATED STORMS MAY ALSO CONTAIN HAIL. HEAVY RAIN WILL BE POSSIBLE AS WELL...AND MAY ADD TO ONGOING FLOODING PROBLEMS. .DAYS TWO THROUGH SEVEN...MONDAY THROUGH SATURDAY A SUBSTANTIAL RISK FOR SEVERE WEATHER WILL CONTINUE INTO MONDAY...WITH MULTIPLE PERIODS OF SEVERE WEATHER POSSIBLE... ESPECIALLY IN THE AFTERNOON AND EVENING. DAMAGING WINDS...LARGE HAIL...AND TORNADOES WILL ALL BE POSSIBLE WITH THE STRONGER STORMS. MAXIMUM HEAT INDEX VALUES ON MONDAY WILL RANGE FROM 105 TO 110 DEGREES. HEAT INDICES ABOVE 100 WILL RETURN BY THE END OF THE WEEK. ADDITIONAL THUNDERSTORMS ARE POSSIBLE ON THURSDAY...BUT THESE ARE CURRENTLY NOT EXPECTED TO BE SEVERE. MODERATE TO MAJOR FLOODING WILL CONTINUE ON THE ILLINOIS RIVER. MINOR FLOODING ON THE SPOON RIVER...MACKINAW RIVER...AND SALT CREEK WILL SUBSIDE OVER THE NEXT FEW DAYS...BUT WILL PERSIST ALONG THE WESTERN END OF THE SANGAMON RIVER MUCH OF THE WEEK. .SPOTTER INFORMATION STATEMENT... SPOTTER ACTIVATION MAY BE NEEDED TONIGHT...WITH THE BEST CHANCES BETWEEN 1 AM AND SUNRISE. ACTIVATION IS LIKELY AGAIN LATE MONDAY AFTERNOON AND MONDAY NIGHT. ILZ038-043>046-053>057-061-131100- CHAMPAIGN-COLES-DE WITT-DOUGLAS-EDGAR-MACON-MCLEAN-MOULTRIE-PIATT- SHELBY-VERMILION- 315 PM CDT SUN JUL 12 2015 ...FLASH FLOOD WATCH IN EFFECT FROM LATE TONIGHT THROUGH LATE MONDAY NIGHT... THIS HAZARDOUS WEATHER OUTLOOK IS FOR EAST CENTRAL ILLINOIS. .DAY ONE...TONIGHT STRONG TO SEVERE THUNDERSTORMS ARE EXPECTED OVERNIGHT...AS A LARGE AREA OF THUNDERSTORMS MOVES SOUTHEAST FROM THE UPPER MISSISSIPPI VALLEY. DAMAGING WINDS ARE THE GREATEST CONCERN WITH THESE STORMS...ALTHOUGH ISOLATED STORMS MAY ALSO CONTAIN HAIL. HEAVY RAIN WILL BE POSSIBLE AS WELL...AND MAY ADD TO ONGOING FLOODING PROBLEMS. .DAYS TWO THROUGH SEVEN...MONDAY THROUGH SATURDAY A SUBSTANTIAL RISK FOR SEVERE WEATHER WILL CONTINUE INTO MONDAY...WITH MULTIPLE PERIODS OF SEVERE WEATHER POSSIBLE. DAMAGING WINDS...LARGE HAIL...AND TORNADOES WILL ALL BE POSSIBLE WITH THE STRONGER STORMS. THE PERIOD OF STRONGEST STORMS WILL LIKELY BE DURING THE AFTERNOON AND EVENING HOURS MONDAY. THE HEAVY RAIN WILL CONTINUE TO BE A CONCERN WITH ANY STORMS. HOT AND HUMID WEATHER MAY INCREASE FOR MONDAY...WITH HEAT INDEX VALUES POTENTIALLY REACHING 100 TO 105...DEPENDING ON TIMING OF THUNDERSTORMS THROUGH THE DAY. SIMILAR HEAT INDEX VALUES ARE EXPECTED ON FRIDAY AS WELL. MINOR FLOODING ALONG THE EAST END OF THE SANGAMON RIVER IS EXPECTED TO SUBSIDE EARLY THIS WEEK...DEPENDING ON HOW MUCH RAIN FALLS TONIGHT THROUGH MONDAY NIGHT. .SPOTTER INFORMATION STATEMENT... SPOTTER ACTIVATION MAY BE NEEDED LATE TONIGHT...WITH THE BEST CHANCES BETWEEN 3 AM AND SUNRISE. ACTIVATION IS LIKELY AGAIN LATE MONDAY AFTERNOON AND MONDAY NIGHT. ILZ062-063-066>068-071>073-131100- CLARK-CLAY-CRAWFORD-CUMBERLAND-EFFINGHAM-JASPER-LAWRENCE-RICHLAND- 315 PM CDT SUN JUL 12 2015 ...FLASH FLOOD WATCH IN EFFECT FROM LATE TONIGHT THROUGH LATE MONDAY NIGHT... THIS HAZARDOUS WEATHER OUTLOOK IS FOR SOUTHEAST ILLINOIS. .DAY ONE...TONIGHT STRONG THUNDERSTORMS ARE POSSIBLE LATE TONIGHT ACROSS SOUTHEAST ILLINOIS...AS A LARGE AREA OF THUNDERSTORMS MOVES SOUTHEAST FROM THE UPPER MISSISSIPPI VALLEY. WHILE THE BETTER SEVERE WEATHER CHANCES ARE EXPECTED FURTHER NORTH...SOME STORMS MAY PRODUCE STRONG WINDS TOWARD SUNRISE. .DAYS TWO THROUGH SEVEN...MONDAY THROUGH SATURDAY A SUBSTANTIAL RISK FOR SEVERE WEATHER WILL CONTINUE INTO MONDAY...WITH MULTIPLE PERIODS OF SEVERE WEATHER POSSIBLE. DAMAGING WINDS...LARGE HAIL...AND TORNADOES WILL ALL BE POSSIBLE WITH THE STRONGER STORMS. THE PERIOD OF STRONGEST STORMS WILL LIKELY BE MONDAY EVENING AND OVERNIGHT. HEAVY RAIN WITH THE STORMS MAY ALSO RESULT IN FLASH FLOODING. HOT AND HUMID WEATHER MAY INCREASE FOR MONDAY...WITH HEAT INDEX VALUES POTENTIALLY REACHING 100 TO 105...DEPENDING ON TIMING OF THUNDERSTORMS THROUGH THE DAY. SIMILAR HEAT INDEX VALUES ARE EXPECTED ON FRIDAY. MINOR TO MODERATE FLOODING WILL CONTINUE ON THE WABASH RIVER THROUGH THE PERIOD. MINOR FLOODING MAY REDEVELOP ON PORTIONS OF THE EMBARRAS AND LITTLE WABASH RIVERS TOWARD MID WEEK. .SPOTTER INFORMATION STATEMENT... SPOTTER ACTIVATION IS NOT ANTICIPATED TONIGHT...BUT IS LIKELY MONDAY EVENING AND MONDAY NIGHT. GEELHART
In the hours before
Local storm report, Jul 12, 11:07 AM CDT, 4 hours 20 minutes before
<!doctype html>
<html lang="en">
<head>
<meta charset="utf-8">
<meta name="viewport" content="width=device-width, initial-scale=1">
<title>Service Notice</title>
<link rel="stylesheet" href="index.css">
</head>
<body>
<main class="wrap">
<section class="card" role="status" aria-live="polite">
<div class="status" id="status">Temporary Notice</div>
<h1 id="headline">This service is currently unavailable.</h1>
<p id="message1">
The site you requested is temporarily down for maintenance or an unexpected outage.
</p>
<p id="message2">
Please try again in a few minutes.
</p>
<p class="small" id="detail">
If you are an administrator, restore upstream service and remove the redirect/fallback rule when normal operations resume.
</p>
</section>
</main>
<script src="index.js"></script>
</body>
</html>Local storm report, Jul 12, 11:08 AM CDT, 4 hours 19 minutes before
<!doctype html>
<html lang="en">
<head>
<meta charset="utf-8">
<meta name="viewport" content="width=device-width, initial-scale=1">
<title>Service Notice</title>
<link rel="stylesheet" href="index.css">
</head>
<body>
<main class="wrap">
<section class="card" role="status" aria-live="polite">
<div class="status" id="status">Temporary Notice</div>
<h1 id="headline">This service is currently unavailable.</h1>
<p id="message1">
The site you requested is temporarily down for maintenance or an unexpected outage.
</p>
<p id="message2">
Please try again in a few minutes.
</p>
<p class="small" id="detail">
If you are an administrator, restore upstream service and remove the redirect/fallback rule when normal operations resume.
</p>
</section>
</main>
<script src="index.js"></script>
</body>
</html>Local storm report, Jul 12, 11:58 AM CDT, 3 hours 29 minutes before
<!doctype html>
<html lang="en">
<head>
<meta charset="utf-8">
<meta name="viewport" content="width=device-width, initial-scale=1">
<title>Service Notice</title>
<link rel="stylesheet" href="index.css">
</head>
<body>
<main class="wrap">
<section class="card" role="status" aria-live="polite">
<div class="status" id="status">Temporary Notice</div>
<h1 id="headline">This service is currently unavailable.</h1>
<p id="message1">
The site you requested is temporarily down for maintenance or an unexpected outage.
</p>
<p id="message2">
Please try again in a few minutes.
</p>
<p class="small" id="detail">
If you are an administrator, restore upstream service and remove the redirect/fallback rule when normal operations resume.
</p>
</section>
</main>
<script src="index.js"></script>
</body>
</html>The office that day
Everything else NWS Lincoln, IL issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jul 11, 7:29 PM CDT | Severe Thunderstorm Warning | ILX | Morgan, Scott | 31 min |
| Jul 11, 7:55 PM CDT | Areal Flood Advisory | ILX | DeWitt, Logan, Macon, Mason, Menard | 6 hr |
| Jul 11, 7:59 PM CDT | Flash Flood Warning | ILX | Morgan, Scott | 6 hr |
| Jul 11, 10:09 PM CDT | Severe Thunderstorm Warning | ILX | Macon, Moultrie, Piatt | 66 min |
| Jul 11, 11:56 PM CDT | Flash Flood Warning | ILX | Coles, Douglas, Moultrie | 3 hr |
| Jul 12, 1:12 AM CDT | River Flood Warning | ILX | Fulton, Knox | 37 hr |
| Jul 12, 1:23 AM CDT | River Flood Warning | ILX | Mason, Menard | 58 hr |
| Jul 12, 2:00 AM CDT | Areal Flood Warning | ILX | Morgan, Scott | 9 hr |
| Jul 12, 10:01 AM CDT | River Flood Warning | ILX | Fulton | 33 hr |
| Jul 12, 3:14 PM CDT | Heat Advisory | ILX | Cass, Champaign, Christian, Coles, Cumberland, DeWitt and 21 more | 29 hr |
Nearby
Flash Flood Watches in Illinois, 2015Every flash flood watch in 2015
Sources
The product and its follow-ups from the Iowa Environmental Mesonet's archive of National Weather Service and Storm Prediction Center text; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.